Log in

Relevant bibliographies by topics / Ankle – Mechanical properties / Journal articles

To see the other types of publications on this topic, follow the link: Ankle – Mechanical properties.

Journal articles on the topic 'Ankle – Mechanical properties'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Ankle – Mechanical properties.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Sinkjær, Thomas, Nikolai Gantchev, and Lars Arendt-Nielsen. "Mechanical properties of human ankle extensors after muscle potentiation." Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section 85, no. 6 (1992): 412–18. http://dx.doi.org/10.1016/0168-5597(92)90055-g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Martelli, Taborri, Del Prete, Palermo, and Rossi. "Quantifying Age-Related Differences of Ankle Mechanical Properties Using a Robotic Device." Robotics 8, no. 4 (2019): 96. http://dx.doi.org/10.3390/robotics8040096.

Full text

Abstract:

A deep analysis of ankle mechanical properties is a fundamental step in the design of an exoskeleton, especially if it is to be suitable for both adults and children. This study aims at assessing age-related differences of ankle properties using pediAnklebot. To achieve this aim, we enrolled 16 young adults and 10 children in an experimental protocol that consisted of the evaluation of ankle mechanical impedance and kinematic performance. Ankle impedance was measured by imposing stochastic torque perturbations in dorsi-plantarflexion and inversion-eversion directions. Kinematic performance was

APA, Harvard, Vancouver, ISO, and other styles

3

Becerra, J. G. Flores, N. López Perrusquia, M. A. Doñu Ruiz, A. López Perrusquia, and J. V. Cortes Suarez. "Study of Microstructure and Mechanical Properties of an Ankle Prosthesis Removing." MRS Proceedings 1766 (2015): 19–25. http://dx.doi.org/10.1557/opl.2015.408.

Full text

Abstract:

ABSTRACTThis work studies the change microstructural and mechanical properties of an ankle prosthetic material 316LVM stainless steel, retired from a 36 year old patient. The medical grade 316LVM stainless steel was characterized by scanning electron microscopy (SEM), optical microscopy (OM), X-ray diffraction (XRD), hardness Rockwell C (HRC) and nanoindentation tests. The results showed that the ankle prosthesis has different microstructural change along the implant and presence of corrosion pits with inclusions, the mechanical properties like modulus elasticity and hardness decrease.

APA, Harvard, Vancouver, ISO, and other styles

4

Sheehan, Conor, and Elaine Figgins. "A comparison of mechanical properties between different percentage layups of a single-style carbon fibre ankle foot orthosis." Prosthetics and Orthotics International 41, no. 4 (2016): 364–72. http://dx.doi.org/10.1177/0309364616652015.

Full text

Abstract:

Background:Currently, a range of ‘off-the-shelf’ ankle foot orthoses are used in clinical practice, of various functions and designs. Their use relates to immediate control over mild conditions.Objectives:To investigate the properties of carbon fibre ankle foot orthoses at different percentage layups and provide a comparison of these through assessment of the (1) elastic properties, (2) deflection about the ankle (including the calculation of stiffness) and (3) failure under compressive forces (dorsiflexion).Study design:Experimental, bench test.Methods:Literature was reviewed to derive a suit

APA, Harvard, Vancouver, ISO, and other styles

5

Wang, Ruoli, Shiyang Yan, Marius Schlippe, et al. "Passive Mechanical Properties of Human Medial Gastrocnemius and Soleus Musculotendinous Unit." BioMed Research International 2021 (February 9, 2021): 1–12. http://dx.doi.org/10.1155/2021/8899699.

Full text

Abstract:

The in vivo characterization of the passive mechanical properties of the human triceps surae musculotendinous unit is important for gaining a deeper understanding of the interactive responses of the tendon and muscle tissues to loading during passive stretching. This study sought to quantify a comprehensive set of passive muscle-tendon properties such as slack length, stiffness, and the stress-strain relationship using a combination of ultrasound imaging and a three-dimensional motion capture system in healthy adults. By measuring tendon length, the cross-section areas of the Achilles tendon s

APA, Harvard, Vancouver, ISO, and other styles

6

Ielapi, Alessio, Malcolm Forward, and Matthieu De Beule. "Computational and experimental evaluation of the mechanical properties of ankle foot orthoses: A literature review." Prosthetics and Orthotics International 43, no. 3 (2019): 339–48. http://dx.doi.org/10.1177/0309364618824452.

Full text

Abstract:

Background: Ankle foot orthoses are external medical devices applied around the ankle joint area to provide stability to patients with neurological, muscular, and/or anatomical disabilities, with the aim of restoring a more natural gait pattern. Study design: This is a literature review. Objectives: To provide a description of the experimental and computational methods present in the current literature for evaluating the mechanical properties of the ankle foot orthoses. Methods: Different electronic databases were used for searching English-language articles realized from 1990 onward in order

APA, Harvard, Vancouver, ISO, and other styles

7

Siegler, Sorin, John Block, and Carson D. Schneck. "The Mechanical Characteristics of the Collateral Ligaments of the Human Ankle Joint." Foot & Ankle 8, no. 5 (1988): 234–42. http://dx.doi.org/10.1177/107110078800800502.

Full text

Abstract:

In the present study, the tensile mechanical properties of all of the collateral ligaments of the human ankle joint were determined, in vitro, from tensile tests conducted on 120 ligaments obtained from 20 fresh lower limbs. The ultimate load of the lateral collateral ligaments increased in an anteroposterior sequence, with the anterior fibulotalar ligament less than the fibulocalcaneal ligament and less than the posterior fibulotalar ligament. For the medial collateral ligaments, the increasing order of ultimate load was found to be tibiocalcaneal ligament, tibionavicular ligament, tibiosprin

APA, Harvard, Vancouver, ISO, and other styles

8

Jeryo, Abbas H., Jumaa S. Chiad, and Wajdi S. Abbod. "Boosting Mechanical Properties of Orthoses - Foot Ankle by Adding Carbon Nanotube Particles." Materials Science Forum 1039 (July 20, 2021): 518–36. http://dx.doi.org/10.4028/www.scientific.net/msf.1039.518.

Full text

Abstract:

In this process, optimum laminating properties were used in producing prosthesis and orthoses were researched and selected based on high yield, ultimate stresses, stresses of bending and fatigue properties. The process of the optimal selection is the Response Surface Methodology (RSM), which has been used to reach two parameters: reinforcement perlon fiber and percent of multi-strand carbon MWCNT nanotube combined with the matrix resin. The response surface methodology is a combination of mathematician and statistic techniques which are used for experimental model building and analysis of prob

APA, Harvard, Vancouver, ISO, and other styles

9

Kovaleski, John E., Robert J. Heitman, Larry R. Gurchiek, J. M. Hollis, Wei Liu, and Albert W. Pearsall IV. "Joint Stability Characteristics of the Ankle Complex After Lateral Ligamentous Injury, Part I: A Laboratory Comparison Using Arthrometric Measurement." Journal of Athletic Training 49, no. 2 (2014): 192–97. http://dx.doi.org/10.4085/1062-6050-49.2.07.

Full text

Abstract:

Context: The mechanical property of stiffness may be important to investigating how lateral ankle ligament injury affects the behavior of the viscoelastic properties of the ankle complex. A better understanding of injury effects on tissue elastic characteristics in relation to joint laxity could be obtained from cadaveric study. Objective: To biomechanically determine the laxity and stiffness characteristics of the cadaver ankle complex before and after simulated injury to the anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) during anterior drawer and inversion loading.

APA, Harvard, Vancouver, ISO, and other styles

10

Kobayashi, Toshiki, Fan Gao, Nicholas LeCursi, K. Bo Foreman, and Michael S. Orendurff. "Effect of Shoes on Stiffness and Energy Efficiency of Ankle-Foot Orthosis: Bench Testing Analysis." Journal of Applied Biomechanics 33, no. 6 (2017): 460–63. http://dx.doi.org/10.1123/jab.2016-0309.

Full text

Abstract:

Understanding the mechanical properties of ankle-foot orthoses (AFOs) is important to maximize their benefit for those with movement disorders during gait. Though mechanical properties such as stiffness and/or energy efficiency of AFOs have been extensively studied, it remains unknown how and to what extent shoes influence their properties. The aim of this study was to investigate the effect of shoes on stiffness and energy efficiency of an AFO using a custom mechanical testing device. Stiffness and energy efficiency of the AFO were measured in the plantar flexion and dorsiflexion range, respe

APA, Harvard, Vancouver, ISO, and other styles

11

Olesen, Annesofie T., Bente R. Jensen, Toni L. Uhlendorf, Randy W. Cohen, Guus C. Baan, and Huub Maas. "Muscle-specific changes in length-force characteristics of the calf muscles in the spastic Han-Wistar rat." Journal of Applied Physiology 117, no. 9 (2014): 989–97. http://dx.doi.org/10.1152/japplphysiol.00587.2014.

Full text

Abstract:

The purpose of the present study was to investigate muscle mechanical properties and mechanical interaction between muscles in the lower hindlimb of the spastic mutant rat. Length-force characteristics of gastrocnemius (GA), soleus (SO), and plantaris (PL) were assessed in anesthetized spastic and normally developed Han-Wistar rats. In addition, the extent of epimuscular myofascial force transmission between synergistic GA, SO, and PL, as well as between the calf muscles and antagonistic tibialis anterior (TA), was investigated. Active length-force curves of spastic GA and PL were narrower wit

APA, Harvard, Vancouver, ISO, and other styles

12

Hoang, Phu D., Michael Psarakis, Li Khim Kwah, Jillian L. Clarke, Simon C. Gandevia, and Joanna Diong. "Brief report: Passive mechanical properties of gastrocnemius in multiple sclerosis and ankle contracture." Clinical Biomechanics 84 (April 2021): 105338. http://dx.doi.org/10.1016/j.clinbiomech.2021.105338.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Kwah, Li Khim, Robert D. Herbert, Lisa A. Harvey, et al. "Passive Mechanical Properties of Gastrocnemius Muscles of People With Ankle Contracture After Stroke." Archives of Physical Medicine and Rehabilitation 93, no. 7 (2012): 1185–90. http://dx.doi.org/10.1016/j.apmr.2012.02.009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

M. Takhakh, Ayad, and Saif M. Abbas. "Manufacturing and analysis of carbon fiber knee ankle foot orthosis." International Journal of Engineering & Technology 7, no. 4 (2018): 2236. http://dx.doi.org/10.14419/ijet.v7i4.17315.

Full text

Abstract:

Knee ankle foot orthoses (KAFOs) are used by paraplegia patients with low level spinal cord injury and having well control of the stem muscles. Four layers of carbon fiber with C- orthocryl lamination resin are used for manufacturing the knee ankle foot orthoses in this work. The mechanical properties of most of the components materials were estimated with the aid of fatigue and tensile test machines. Results of the tensile tests showed that the mechanical properties: yield stress, ultimate strength and modulus of elasticity were 92MPa, 105.7MPa and 2GPa respectively. The value of amidst press

APA, Harvard, Vancouver, ISO, and other styles

15

Gao, Fan, William Carlton, and Susan Kapp. "Effects of joint alignment and type on mechanical properties of thermoplastic articulated ankle-foot orthosis." Prosthetics and Orthotics International 35, no. 2 (2011): 181–89. http://dx.doi.org/10.1177/0309364611409617.

Full text

Abstract:

Background: Articulated or hinged ankle-foot orthosis (AFO) allow more range of motion. However, quantitative investigation on articulated AFO is still sparse.Objective: The objective of the study was to quantitatively investigate effects of alignment and joint types on mechanical properties of the thermoplastic articulated AFO.Study design: Tamarack dorsiflexion assist flexure joints with three durometers (75, 85 and 95) and free motion joint were tested. The AFO joint was aligned with the center of the motor shaft (surrogate ankle joint), 10 mm superior, inferior, anterior and posterior with

APA, Harvard, Vancouver, ISO, and other styles

16

Parekh, Selene, Samuel Adams, James Nunley, et al. "Mechanically Superior Molybdenum Rhenium (MoRe®) Alloy provides an advanced option for Foot and Ankle Implants." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0037. http://dx.doi.org/10.1177/2473011418s00376.

Full text

Abstract:

Category: Other Introduction/Purpose: One of the most common complications in orthopaedic surgery of the foot and ankle is nonunion or delayed union and bone or implant fractures. Although foot and ankle surgery has improved dramatically over the past decades primarily due to the development of better techniques, little progress has been made in the development of new materials for implants. Titanium, the most commonly used alloy for foot and ankle implants, has limited strength and is notch-sensitive so repetitive stress leads to fatigue failure of implants and limits design options. Better m

APA, Harvard, Vancouver, ISO, and other styles

17

Zhao, Heng, Yupeng Ren, Yi-Ning Wu, Shu Q. Liu, and Li-Qun Zhang. "Ultrasonic evaluations of Achilles tendon mechanical properties poststroke." Journal of Applied Physiology 106, no. 3 (2009): 843–49. http://dx.doi.org/10.1152/japplphysiol.91212.2008.

Full text

Abstract:

Spasticity, contracture, and muscle weakness are commonly observed poststroke in muscles crossing the ankle. However, it is not clear how biomechanical properties of the Achilles tendon change poststroke, which may affect functions of the impaired muscles directly. Biomechanical properties of the Achilles tendon, including the length and cross-sectional area, in the impaired and unimpaired sides of 10 hemiparetic stroke survivors were evaluated using ultrasonography. Elongation of the Achilles tendon during controlled isometric ramp-and-hold and ramping up then down contractions was determined

APA, Harvard, Vancouver, ISO, and other styles

18

Alt, Wilfried, Heinz Lohrer, and Albert Gollhofer. "Functional Properties of Adhesive Ankle Taping: Neuromuscular and Mechanical Effects Before and After Exercise." Foot & Ankle International 20, no. 4 (1999): 238–45. http://dx.doi.org/10.1177/107110079902000406.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Best, Raymond, Caroline Böhle, Frieder Mauch, and Peter G. Brüggemann. "Preventive lateral ligament tester (PLLT): a novel method to evaluate mechanical properties of lateral ankle joint ligaments in the intact ankle." Knee Surgery, Sports Traumatology, Arthroscopy 24, no. 4 (2014): 963–70. http://dx.doi.org/10.1007/s00167-014-3190-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Ruiz, Roxa, Lukas Zwicky, and Beat Hintermann. "Syndesmotic Instability After Total Ankle Replacement." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0010. http://dx.doi.org/10.1177/2473011418s00103.

Full text

Abstract:

Category: Ankle Arthritis Introduction/Purpose: Total ankle replacement (TAR) evolved over the last decades and has been shown to be an effective concept in the treatment of ankle osteoarthritis (OA). In three-component designs, the second interface between polyethylene insert (PI) and tibial component allows the PI to find its position according the individual physiological properties. This was believed to decrease shear forces within the ankle joint. However, it is not clarified to which extent such an additional degree of freedom may overload the ligamentous structures of the ankle joint ov

APA, Harvard, Vancouver, ISO, and other styles

21

Bregman, Daan J. J., Vincent De Groot, Peter Van Diggele, Hubert Meulman, Han Houdijk, and Jaap Harlaar. "Polypropylene Ankle Foot Orthoses to Overcome Drop-Foot Gait in Central Neurological Patients: A Mechanical and Functional Evaluation." Prosthetics and Orthotics International 34, no. 3 (2010): 293–304. http://dx.doi.org/10.3109/03093646.2010.495969.

Full text

Abstract:

The aim of this study was to assess the functional effects and mechanical contribution of Ankle Foot Orthoses (AFO) prescribed to overcome drop-foot gait. We hypothesized that poor functional effects of the AFO relate to insufficient mechanical contribution of the AFO during the swing phase, or unwanted constraining of the ankle during the stance phase. In seven patients with Stroke or Multiple Sclerosis, we determined changes in energy cost of walking resulting from wearing an AFO, as a measure of the functional effects. In addition, an instrumented gait analysis was performed, and the mechan

APA, Harvard, Vancouver, ISO, and other styles

22

Enomoto, Shota, Tomonari Shibutani, Yu Akihara, Miyuki Nakatani, Kazunori Yamada, and Toshiaki Oda. "Acute Effects of Dermal Suction on Passive Muscle and Joint Stiffness." Healthcare 9, no. 11 (2021): 1483. http://dx.doi.org/10.3390/healthcare9111483.

Full text

Abstract:

The aim of the present study was to examine the acute effects of dermal suction on the passive mechanical properties of specific muscles and joints. Dermal suction was applied to the calves of 24 subjects. Passive plantar flexion torque was measured with the right knee fully extended and the right ankle positioned at 20°, 10°, 0°, and −10° angles, where 0° represents the ankle neutral position, and positive values correspond to the plantar flexion angle. The shear wave velocity (SWV) (m/s) of the medial gastrocnemius was measured in the same position using ultrasound shear wave elastography. T

APA, Harvard, Vancouver, ISO, and other styles

23

Deng, Liqin, Xini Zhang, Songlin Xiao, Baofeng Wang, and Weijie Fu. "Gender Difference in Architectural and Mechanical Properties of Medial Gastrocnemius–Achilles Tendon Unit In Vivo." Life 11, no. 6 (2021): 569. http://dx.doi.org/10.3390/life11060569.

Full text

Abstract:

This study aims to explore whether gender differences exist in the architectural and mechanical properties of the medial gastrocnemius–Achilles tendon unit (gMTU) in vivo. Thirty-six healthy male and female adults without training experience and regular exercise habits were recruited. The architectural and mechanical properties of the gMTU were measured via an ultrasonography system and MyotonPRO, respectively. Independent t-tests were utilized to quantify the gender difference in the architectural and mechanical properties of the gMTU. In terms of architectural properties, the medial gastrocn

APA, Harvard, Vancouver, ISO, and other styles

24

Adiputra, Dimas, Nurhazimah Nazmi, Irfan Bahiuddin, et al. "A Review on the Control of the Mechanical Properties of Ankle Foot Orthosis for Gait Assistance." Actuators 8, no. 1 (2019): 10. http://dx.doi.org/10.3390/act8010010.

Full text

Abstract:

In the past decade, advanced technologies in robotics have been explored to enhance the rehabilitation of post-stroke patients. Previous works have shown that gait assistance for post-stroke patients can be provided through the use of robotics technology in ancillary equipment, such as Ankle Foot Orthosis (AFO). An AFO is usually used to assist patients with spasticity or foot drop problems. There are several types of AFOs, depending on the flexibility of the joint, such as rigid, flexible rigid, and articulated AFOs. A rigid AFO has a fixed joint, and a flexible rigid AFO has a more flexible

APA, Harvard, Vancouver, ISO, and other styles

25

Yim, JongEun, Jerrold Petrofsky, and Haneul Lee. "Correlation between Mechanical Properties of the Ankle Muscles and Postural Sway during the Menstrual Cycle." Tohoku Journal of Experimental Medicine 244, no. 3 (2018): 201–7. http://dx.doi.org/10.1620/tjem.244.201.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Gao, Fan, and Gary G. Bedard. "Effects of Materials, Reinforcement, and Heat Treatment on Thermoplastic Solid Ankle-Foot Orthosis Mechanical Properties." JPO Journal of Prosthetics and Orthotics 25, no. 3 (2013): 143–50. http://dx.doi.org/10.1097/jpo.0b013e31829c163d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Banga, Harish Kumar, Parveen Kalra, Rajendra M. Belokar, and Rajesh Kumar. "Customized design and additive manufacturing of kids’ ankle foot orthosis." Rapid Prototyping Journal 26, no. 10 (2020): 1677–85. http://dx.doi.org/10.1108/rpj-07-2019-0194.

Full text

Abstract:

Purpose The purpose of this study is improvement of human gait by customized design of ankle foot orthosis (AFO). An has been the most frequently used orthosis in children with cerebral palsy. AFOs are designed to boost existing features or to avoid depression or traumatize muscle contractures. The advantages of AFO’s utilized for advancement in human walk attributes for the improvement in foot deformities patients or youngsters with spastic loss of motion. In this research on the customized design of AFO's to improve gait, there are limitations during walking of foot drop patients. In childre

APA, Harvard, Vancouver, ISO, and other styles

28

Sinkjaer, T., J. Nielsen, and E. Toft. "Mechanical and electromyographic analysis of reciprocal inhibition at the human ankle joint." Journal of Neurophysiology 74, no. 2 (1995): 849–55. http://dx.doi.org/10.1152/jn.1995.74.2.849.

Full text

Abstract:

1. The purpose of the present study is to investigate how reciprocal inhibition influences the mechanical and electromyographic (EMG) properties of the ankle plantar flexors in humans during a voluntary contraction. 2. At different levels of maintained plantar flexion contractions ranging from 0 to 20 Nm, the size of the soleus EMG stretch reflex and the ankle joint stiffness (ration between the torque increment and the amplitude of the stretch) were measured in response to an imposed dorsiflexion. At matched plantar flexion contraction levels, stretch responses were compared before and after

APA, Harvard, Vancouver, ISO, and other styles

29

Lin, Kuang-Wei, Chia-Jung Hu, Wen-Wen Yang, et al. "Biomechanical Evaluation and Strength Test of 3D-Printed Foot Orthoses." Applied Bionics and Biomechanics 2019 (December 7, 2019): 1–8. http://dx.doi.org/10.1155/2019/4989534.

Full text

Abstract:

Foot orthoses (FOs) are commonly used as interventions for individuals with flatfoot. Advances in technologies such as three-dimensional (3D) scanning and 3D printing have facilitated the fabrication of custom FOs. However, few studies have been conducted on the mechanical properties and biomechanical effects of 3D-printed FOs. The purposes of this study were to evaluate the mechanical properties of 3D-printed FOs and determine their biomechanical effects in individuals with flexible flatfoot. During mechanical testing, a total of 18 FO samples with three orientations (0°, 45°, and 90°) were f

APA, Harvard, Vancouver, ISO, and other styles

30

Yamamoto, S., A. Hagiwara, T. Mizobe, O. Yokoyama, and T. Yasui. "Development of an ankle – foot orthosis with an oil damper." Prosthetics and Orthotics International 29, no. 3 (2005): 209–19. http://dx.doi.org/10.1080/03093640500199455.

Full text

Abstract:

The purpose of the present study was to develop an ankle – foot orthosis (AFO) that satisfies the requirements for an AFO for patients with hemiplegia as determined in a previous study. An oil damper has been introduced as an assistive device. The oil damper provides a resistive moment to plantar flexion of the ankle joint during initial stance on the paretic side. This function improves the insufficient eccentric contraction of the dorsiflexors. The magnitude of the resistive moment generated by this newly developed AFO can be changed easily to adjust its properties in accordance with the req

APA, Harvard, Vancouver, ISO, and other styles

31

Campagnoli, Elena, Sorin Siegler, Maria Ruiz, Alberto Leardini, and Claudio Belvedere. "Effect of Ligament Mapping from Different Magnetic Resonance Image Quality on Joint Stability in a Personalized Dynamic Model of the Human Ankle Complex." Applied Sciences 12, no. 10 (2022): 5087. http://dx.doi.org/10.3390/app12105087.

Full text

Abstract:

Background. Mechanical models of the human ankle complex are used to study the stabilizing role of ligaments. Identification of ligament function may be improved via image-based personalized approach. The aim of this study is to compare the effect of the ligament origin and insertion site definitions obtained with different magnetic resonance imaging (MRI) modalities on the mechanical behaviour of a dynamic model of the ankle complex. Methods. MRI scans, both via 1.5 T and 3.0 T, were performed on a lower-limb specimen, free from anatomical defects, to obtain morphological information on ligam

APA, Harvard, Vancouver, ISO, and other styles

32

Otegen, D., K. Shomenov, K. Zhangabay, Desmond Adair, and Md Hazrat Ali. "Development of an AFO with Dual-material using an FDM Printer." Journal of Physics: Conference Series 2070, no. 1 (2021): 012200. http://dx.doi.org/10.1088/1742-6596/2070/1/012200.

Full text

Abstract:

Abstract This paper presents a design and development of an Ankle Foot Orthosis (AFO) printed with a multi-extrusion Fused Deposition Modelling (FDM) printer. AFO is crucial in the healing of patients with ankle joint displacement. It helps to heal the foot easily. The model is designed to print with dual materials such as flex and polylactic acid (PLA). The critical problem in building a prototype is to obtain excellent bonding properties between the layers of different materials. The Flex material is softer than the PLA and both have different melting temperatures. Thus, successfully printin

APA, Harvard, Vancouver, ISO, and other styles

33

Abar, Bijan, Cambre N. Kelly, Nicholas B. Allen, et al. "Influence of Topography on 3D printed Titanium Foot and Ankle Implants." Foot & Ankle Orthopaedics 5, no. 4 (2020): 2473011420S0001. http://dx.doi.org/10.1177/2473011420s00016.

Full text

Abstract:

Category: Basic Sciences/Biologics; Ankle; Trauma Introduction/Purpose Foot and ankle etiologies such as traumatic fractures, Charcot Arthropathy, nonunion after high risk arthrodesis and infectious debridement can result in critical sized bone defect (CSD). CSD is defined as bone loss greater than 1-2 cm in length or greater than 50% loss in circumference of bone. CSD remain a significant challenge in Orthopaedics. Custom 3D printed porous Titanium implants are currently being implemented when allograft is not an option. However, in a subset of cases, Titanium implants need to be removed due

APA, Harvard, Vancouver, ISO, and other styles

34

Valle, Rodrigo, Gonzalo Pincheira, Víctor Tuninetti, Cesar Garrido, Cecilia Treviño, and Jorge Morales. "Evaluation of the Orthotropic Behavior in AN Auxetic Structure Based on a Novel Design Parameter of a Square Cell with Re-Entrant Struts." Polymers 14, no. 20 (2022): 4325. http://dx.doi.org/10.3390/polym14204325.

Full text

Abstract:

In this research, a three-dimensional auxetic configuration based on a known re-entrant cell is proposed. The 3D auxetic cell is configured from a new design parameter that produces an internal rotation angle to its re-entrant elements to study elastic properties in its three orthogonal directions. Through a topological analysis using Timoshenko beam theory, the bending of its re-entrant struts is modeled as a function of the new design parameter to manipulate Poisson’s ratio and Young’s modulus. Experimental samples were fabricated using a fused filament fabrication system using ABS and subse

APA, Harvard, Vancouver, ISO, and other styles

35

Caravaggi, Paolo, Alessandro Zomparelli, Giulia Rogati, et al. "Development of a Novel Passive-Dynamic Custom AFO for Drop-Foot Patients: Design Principles, Manufacturing Technique, Mechanical Properties Characterization and Functional Evaluation." Applied Sciences 12, no. 9 (2022): 4721. http://dx.doi.org/10.3390/app12094721.

Full text

Abstract:

Ankle foot orthoses (AFOs) are medical devices prescribed to support the foot and ankle of drop-foot patients. Passive-dynamic AFOs (PD-AFOs) are an effective solution for less severe cases. While off-the-shelf PD-AFOs are rather inexpensive, they provide poor anatomical fit and do not account for the required patient-specific biomechanical support. Three-dimensional (3D) scanning and manufacturing technologies allow manufacturing PD-AFOs customized for the patient’s anatomy and functional needs. This paper aimed to report the overall procedure for designing and manufacturing a novel, fibergla

APA, Harvard, Vancouver, ISO, and other styles

36

Liu, Yuanjie, Qing Zhou, Shun Gan, and Bingbing Nie. "Influence of population variability in ligament material properties on the mechanical behavior of ankle: a computational investigation." Computer Methods in Biomechanics and Biomedical Engineering 23, no. 2 (2019): 43–53. http://dx.doi.org/10.1080/10255842.2019.1699541.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Shin, YeJi, and TaeLim Yoon. "The Short Term Effects of Ankle Strengthening Emphasis with Jumping on Strength, Mechanical Properties, and Balance with and without Wearing High Heel in Ankle Instability." Journal of Korean Physical Therapy 31, no. 4 (2019): 176–83. http://dx.doi.org/10.18857/jkpt.2019.31.4.176.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Darter, Benjamin J., and Jason M. Wilken. "Energetic consequences of using a prosthesis with adaptive ankle motion during slope walking in persons with a transtibial amputation." Prosthetics and Orthotics International 38, no. 1 (2013): 5–11. http://dx.doi.org/10.1177/0309364613481489.

Full text

Abstract:

Background:Technological advances in prosthetic design include the use of microprocessors that adapt device performance based on user motion. The Proprio ankle unit prepositions the foot to adjust for walking on slopes and increases foot clearance during swing to minimize gait deviations.Study design:Comparative analysis.Objectives:To investigate the effect of a prosthesis with adaptive ankle motion on physiological gait performance during slope walking.Methods:Six persons with a unilateral transtibial amputation completed treadmill walking tests at three slopes (−5°, 0°, and 5°). The particip

APA, Harvard, Vancouver, ISO, and other styles

39

Pollock, C. M., and R. E. Shadwick. "Relationship between body mass and biomechanical properties of limb tendons in adult mammals." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 266, no. 3 (1994): R1016—R1021. http://dx.doi.org/10.1152/ajpregu.1994.266.3.r1016.

Full text

Abstract:

We investigated the allometric relationship between the mechanical properties of various limb tendons and body mass. The elastic modulus (i.e., stiffness) and hysteresis (i.e., energy dissipation) of digital flexor, ankle extensor, and digital extensor tendons from 18 species of adult quadrupedal mammals ranging in body mass from 0.5 to 545 kg were determined by cyclic tensile testing in vitro. The results show that these elastic properties do not vary significantly among tendons from animals of different body mass, nor do they differ between the digital flexor and ankle extensor tendons (thos

APA, Harvard, Vancouver, ISO, and other styles

40

Muralidharan, Laxmi, Philip Cardiff, Karen Fitzgerald, Robert Flavin, and Alojz Ivanković. "A patient-specific numerical model of the ankle joint for the analysis of contact pressure distribution." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 234, no. 9 (2020): 909–20. http://dx.doi.org/10.1177/0954411920932687.

Full text

Abstract:

A patient-specific numerical model of the ankle joint has been developed using open-source software with realistic material properties that mimics the physiological movement of the foot during the stance phase of the gait cycle. The patient-specific ankle geometry has been segmented as a castellated surface using 3DSlicer from the computed tomography image scans of a subject with no congenital or acquired pathology; subsequently, the bones are smoothed, and cartilage is included as a uniform thickness extruded layer. A high-resolution Cartesian mesh has been generated using cfMesh. The materia

APA, Harvard, Vancouver, ISO, and other styles

41

Cordier, Guillaume, Gustavo Araujo Nunes, and Miki Dalmau-Pastor. "The mechanical effect of the common fibers of the anterior talofibular and calcaneofibular ligaments." Orthopaedic Journal of Sports Medicine 9, no. 2_suppl (2021): 2325967121S0000. http://dx.doi.org/10.1177/2325967121s00008.

Full text

Abstract:

Objectives: The subject of the lateral ankle ligament complex is a familiar one. Common fibers between the inferior bundle of the anterior talofibular ligament (ATFL) and the calcaneofibular ligament (CFL) have been described. The purpose of this study is to investigate the possibility of transmitting a force to the CFL through the inf. ATFL. Methods: An anatomical study was carried out on 12 ankles. Each specimen was dissected according to a protocol to expose the lateral ligaments. A proximal section was made in the superior and inferior bands of the anterior talofibular ligament. A device c

APA, Harvard, Vancouver, ISO, and other styles

42

Oba, Kensuke, Mina Samukawa, Yosuke Abe, et al. "Effects of Intermittent and Continuous Static Stretching on Range of Motion and Musculotendinous Viscoelastic Properties Based on a Duration-Matched Protocol." International Journal of Environmental Research and Public Health 18, no. 20 (2021): 10632. http://dx.doi.org/10.3390/ijerph182010632.

Full text

Abstract:

The different effects of intermittent and continuous stretching on the mechanical properties of the musculotendinous complex have been unclear. This study aimed to compare the effects of intermittent and continuous stretching for the same duration on the range of motion (ROM), passive resistive torque (PRT), and musculotendinous stiffness (MTS) of ankle plantar flexors. Eighteen healthy young men participated in the study. Intermittent (four sets × 30 s) and continuous stretching (one set × 120 s) were performed in random orders on two separate days. Both stretching protocols were conducted us

APA, Harvard, Vancouver, ISO, and other styles

43

Kadhum, Murtaza, Mu-Huan Lee, Jan Czernuszka, and Chris Lavy. "An Analysis of the Mechanical Properties of the Ponseti Method in Clubfoot Treatment." Applied Bionics and Biomechanics 2019 (March 25, 2019): 1–11. http://dx.doi.org/10.1155/2019/4308462.

Full text

Abstract:

Congenital clubfoot is a complex pediatric foot deformity, occurring in approximately 1 in 1000 live births and resulting in significant disability, deformity, and pain if left untreated. The Ponseti method of manipulation is widely recognized as the gold standard treatment for congenital clubfoot; however, its mechanical aspects have not yet been fully explored. During the multiple manipulation-casting cycles, the tendons and ligaments on the medial and posterior aspect of the foot and ankle, which are identified as the rate-limiting tissues, usually undergo weekly sequential stretches, with

APA, Harvard, Vancouver, ISO, and other styles

44

Leahy, Thomas P., Courtney A. Nuss, Mary Kate Evans, Ashley K. Fung, Snehal S. Shetye, and Louis J. Soslowsky. "Achilles Tendon Ruptures in Middle-Aged Rats Heal Poorly Compared With Those in Young and Old Rats." American Journal of Sports Medicine 50, no. 1 (2021): 170–81. http://dx.doi.org/10.1177/03635465211055476.

Full text

Abstract:

Background: Achilles tendon ruptures are painful and debilitating injuries and are most common in middle-aged patients. There is a lack of understanding of the underlying causes for increased rupture rates in middle-aged patients and how healing outcomes after a rupture might be affected by patient age. Therefore, the objective of this study was to define age-specific Achilles tendon healing by assessing ankle functional outcomes and Achilles tendon mechanical and histological properties after a rupture using a rat model. Hypothesis: Rats representing the middle-aged patient population would d

APA, Harvard, Vancouver, ISO, and other styles

45

Bartholomew, Ania, Tyler Slone, Michael Ciesa, Nicholas A. Cheney, and Brian C. Clark. "Analysis of Complications Following Distal Ankle Nerve Blocks for Foot and Ankle Procedures." Foot & Ankle Orthopaedics 7, no. 1 (2022): 2473011421S0010. http://dx.doi.org/10.1177/2473011421s00104.

Full text

Abstract:

Category: Ankle; Arthroscopy; Bunion; Hindfoot; Midfoot/Forefoot; Other Introduction/Purpose: Popliteal nerve blocks are a common procedure employed by anesthesiologists to augment intraoperative anesthesia and provide postoperative pain control. Unfortunately, these can be associated with unintended complications including pain, numbness, and foot drop, sometimes without clear resolution. Studies from Kahn (2017), Anderson (2015), Park (2018), Lauf (2020) suggest complications higher than previously reported with Lauf (2020) finding short-term complication rates of 10.1% and 4.1% long-term as

APA, Harvard, Vancouver, ISO, and other styles

46

Sonda, Francesca C., Mariana O. Borges, Emmanuel S. Rocha, Anelize Cini, Marco A. Vaz, and Claudia S. Lima. "The effects of a 10-minute triceps surae stretching session persist after 60 min: a randomized clinical trial." Brazilian Journal of Motor Behavior 16, no. 3 (2022): 276–90. http://dx.doi.org/10.20338/bjmb.v16i3.292.

Full text

Abstract:

BACKGROUND: Stretching exercises increase the joint range of motion (ROM) and depend on the skeletal tissues' exposition-time to stretch. However, it is unclear how a long stretching time affects the muscle-tendon unit's passive mechanical properties. AIM: This study aimed to analyze changes in the triceps surae muscle-tendon unit’s passive mechanical properties before and after a 10-minute passive stretching protocol. METHOD: Thirty healthy participants (26.57 ± 3.82 years old) were allocated into a control group (n=15), who did not perform any intervention, and to an experimental group (n=15

APA, Harvard, Vancouver, ISO, and other styles

47

Tamošiūnas, Justas, and Vytautas Bučinskas. "Research of the dynamical properties of mechatronic prosthesis." Robotic Systems and Applications 2, no. 2 (2022): 29–42. http://dx.doi.org/10.21595/rsa.2022.22678.

Full text

Abstract:

The mechatronic ankle prosthesis plays a crucial role in the recreation of natural gait biomechanics by being able to actively control time-torque parameters in different sub-phases of the walking cycle. This paper presents a methodology for improving the design process of the individual characteristics of the object of interest. A series of tests were taken to derive a correlation between an actual structure and a developed mathematical model to determine the parameters of the object under investigation. The model provides a possibility to determine time-changing force-related properties to c

APA, Harvard, Vancouver, ISO, and other styles

48

Hasson, Christopher J., Richard E. A. van Emmerik, and Graham E. Caldwell. "Balance Decrements Are Associated With Age-Related Muscle Property Changes." Journal of Applied Biomechanics 30, no. 4 (2014): 555–62. http://dx.doi.org/10.1123/jab.2013-0294.

Full text

Abstract:

In this study, a comprehensive evaluation of static and dynamic balance abilities was performed in young and older adults and regression analysis was used to test whether age-related variations in individual ankle muscle mechanical properties could explain differences in balance performance. The mechanical properties included estimates of the maximal isometric force capability, force-length, force-velocity, and series elastic properties of the dorsiflexors and individual plantarflexor muscles (gastrocnemius and soleus). As expected, the older adults performed more poorly on most balance tasks.

APA, Harvard, Vancouver, ISO, and other styles

49

Rogati, G., P. Caravaggi, A. Leardini, et al. "A novel apparatus to assess the mechanical properties of Ankle-Foot Orthoses: Stiffness analysis of the Codivilla spring." Journal of Biomechanics 142 (September 2022): 111239. http://dx.doi.org/10.1016/j.jbiomech.2022.111239.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Stefańczak, D., J. Gajewski, and M. Rogala. "Application of the finite element method to the design of an ankle orthosis." Journal of Physics: Conference Series 2130, no. 1 (2021): 012013. http://dx.doi.org/10.1088/1742-6596/2130/1/012013.

Full text

Abstract:

Abstract AFO (Ankle-Foot Orthosis), which covers the ankle and foot, protects and supports the ankle joint as well as the structures around it. It contributes to the maintenance of the correct gait cycle. Owing to orthoses, the functional capacity of the body part is significantly improved, and so is the quality of life for the user. Personalized orthoses, which are adapted to the anatomy of the user, are more and more often produced by the additive methods. The use of 3D printing for the manufacturing medical devices is becoming increasingly common due to the low cost of the whole process, sh

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!